/* * Copyright 2003-2017 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include "output/Internal.hxx" #include "output/OutputPlugin.hxx" #include "output/Client.hxx" #include "config/Param.hxx" #include "config/ConfigGlobal.hxx" #include "config/ConfigOption.hxx" #include "Idle.hxx" #include "Main.hxx" #include "event/Thread.hxx" #include "fs/Path.hxx" #include "AudioParser.hxx" #include "ReplayGainConfig.hxx" #include "pcm/PcmConvert.hxx" #include "filter/FilterRegistry.hxx" #include "util/StringBuffer.hxx" #include "util/RuntimeError.hxx" #include "util/ScopeExit.hxx" #include "Log.hxx" #include #include #include #include #include class DummyAudioOutputClient final : public AudioOutputClient { public: /* virtual methods from AudioOutputClient */ void ChunksConsumed() override { } void ApplyEnabled() override { } }; const FilterPlugin * filter_plugin_by_name(gcc_unused const char *name) { assert(false); return NULL; } static AudioOutput * load_audio_output(EventLoop &event_loop, AudioOutputClient &client, const char *name) { const auto *param = config_find_block(ConfigBlockOption::AUDIO_OUTPUT, "name", name); if (param == NULL) throw FormatRuntimeError("No such configured audio output: %s\n", name); return audio_output_new(event_loop, ReplayGainConfig(), *param, *(MixerListener *)nullptr, client); } static void run_output(AudioOutput &ao, AudioFormat audio_format) { /* open the audio output */ ao_plugin_enable(ao); AtScopeExit(&ao) { ao_plugin_disable(ao); }; ao_plugin_open(ao, audio_format); AtScopeExit(&ao) { ao_plugin_close(ao); }; fprintf(stderr, "audio_format=%s\n", ToString(audio_format).c_str()); size_t frame_size = audio_format.GetFrameSize(); /* play */ size_t length = 0; char buffer[4096]; while (true) { if (length < sizeof(buffer)) { ssize_t nbytes = read(0, buffer + length, sizeof(buffer) - length); if (nbytes <= 0) break; length += (size_t)nbytes; } size_t play_length = (length / frame_size) * frame_size; if (play_length > 0) { size_t consumed = ao_plugin_play(ao, buffer, play_length); assert(consumed <= length); assert(consumed % frame_size == 0); length -= consumed; memmove(buffer, buffer + consumed, length); } } } int main(int argc, char **argv) try { if (argc < 3 || argc > 4) { fprintf(stderr, "Usage: run_output CONFIG NAME [FORMAT] 3) audio_format = ParseAudioFormat(argv[3], false); /* do it */ run_output(*ao, audio_format); /* cleanup and exit */ audio_output_free(ao); config_global_finish(); return EXIT_SUCCESS; } catch (const std::exception &e) { LogError(e); return EXIT_FAILURE; }